Kaoru, a 37-year-old housewife in her 16th year of marriage, has been suffering from a sexless relationship with her husband for 8 years. One rainy day, while gathering laundry from the balcony, she meets Yuta, a college student who lives next door. Yuta's gentle expression and the way he looks at her as a "woman" awaken the long-forgotten feminine desires within Kaoru... From that day on, Kaoru sends a secret sign to Yuta on rainy days: "If I'm hanging my panties, it means my husband is away and I want to have sex." Kaoru finds herself deeply immersed in a soaking wet affair with Yuta...
